1.25A, 1.2MHz Synchronous Step-Down DC-to-DC Regulator Features: Continuous output current: 1.25A 145 mΩ and 70 mΩ integrated FET Input voltage range from 2.3V to 5.5 V Output voltage from 0.6V to VIN ±1.5% output accuracy 1.2MHz fixed switching frequency Synchronizable between 1.0MHz and 2MHz Selectable PWM or PFM mode operation Current mode architecture Precision threshold enable input Power-good flag Voltage tracking input Integrated soft start Internal compensation Start up with precharged output See data sheet for additional features